Curious goliath grouper supervises scuba diver filming sea turtle

The goliath grouper, also called the gigantic grouper is one of the largest bony fishes in the Atlantic Ocean. They are plentiful in the waters around Mexico and South America. They can reach an astounding 2.5m (8 feet) and 363kg (800lbs). They inhabit coral reefs, rocky shoals and manmade wrecks.
The goliath grouper can reach an age of 37 years in the wild.
This young scuba diver was pending some time with a green turtle, recording it as it settled down for a nap in the sand. She sank slowly to the bottom and remained almost motionless, leaving the turtle with no reason to fear her presence. Remaining still and quiet, she attracted the attention of this grouper who drifted over to see what she was doing. Intelligent fish, groupers are naturally curious about anything that does not represent a threat. It seemed inquisitive about her camera and about her interest in the turtle.
Over the next ten minutes, the grouper swam off and returned, seemingly unable to take it's eyes off Serena and the turtle.
This curious interaction took place in Mexico, near Playa del Carmen.